제출 #918562

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
918562		HaciyevAlik	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	11 ms	1260 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
const int mx=550;
vector<int> g[mx],order;
void dfs(int u,int p) {
    order.push_back(u);
    for(int v:g[u]) {
        if(v!=p) dfs(v,u);
    }
}
int findEgg (int N,vector<pair<int,int>> bridges){
    order.clear();
    for(int i=0;i<mx;++i) g[i].clear();
    for(int i=0;i<N-1;++i) {
        int u=bridges[i].first,v=bridges[i].second;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    dfs(1,0);
    int l=0,r=N-1;
    while(l<r) {
        int mid=(l+r)/2;
        vector<int> temp;
        for(int i=0;i<=mid;++i) {
            temp.push_back(order[i]);
        }
        if(query(temp)) {
            r=mid;
        } else {
            l=mid+1;
        }
    }
    return order[l];
}

• Subtask 1: 40 / 40
• Subtask 2: 40 / 40
• Subtask 3: 20 / 20